Purpur/patches/server/0151-Farmland-trampling-changes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 9 Jan 2021 16:06:40 +0100
Subject: [PATCH] Farmland trampling changes

This lets us choose if farmland trampling is fully disabled or only
players may trample farmland.

This lets us choose if entities can stop trampling if they fall a
distance equal to their feather falling level, plus the extra block
necessary to trample in the first place. Feather Falling 1 requires
you to fall over 3+ blocks to trample. FF 2 requires 4+, etc.

diff --git a/src/main/java/net/minecraft/world/level/block/FarmBlock.java b/src/main/java/net/minecraft/world/level/block/FarmBlock.java
index 5b15275c8d808916a1506a19a8bc29103adedae9..3b170886d42df4c217b565f54b1c62726bb4732a 100644
--- a/src/main/java/net/minecraft/world/level/block/FarmBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/FarmBlock.java
@@ -114,12 +114,20 @@ public class FarmBlock extends Block {
             }
 
             // Purpur start
+            if (world.purpurConfig.farmlandTramplingDisabled) return;
+            if (world.purpurConfig.farmlandTramplingOnlyPlayers && !(entity instanceof Player)) return;
             if (world.purpurConfig.farmlandAlpha) {
                 Block block = world.getBlockState(pos.below()).getBlock();
                 if (block instanceof FenceBlock || block instanceof WallBlock) {
                     return;
                 }
             }
+            if (world.purpurConfig.farmlandTramplingFeatherFalling) {
+                Iterator<net.minecraft.world.item.ItemStack> armor = entity.getArmorSlots().iterator();
+                if (armor.hasNext() && net.minecraft.world.item.enchantment.EnchantmentHelper.getItemEnchantmentLevel(net.minecraft.world.item.enchantment.Enchantments.FALL_PROTECTION, armor.next()) >= (int) entity.fallDistance) {
+                    return;
+                }
+            }
             // Purpur end
             if (CraftEventFactory.callEntityChangeBlockEvent(entity, pos, Blocks.DIRT.defaultBlockState()).isCancelled()) {
                 return;
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index 5f6cd91f7eda35f1e0310ec76f7380e3b1e237d3..faed827a793ed026a223de00130199438776b070 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -450,10 +450,16 @@ public class PurpurWorldConfig {
     public boolean farmlandBypassMobGriefing = false;
     public boolean farmlandGetsMoistFromBelow = false;
     public boolean farmlandAlpha = false;
+    public boolean farmlandTramplingDisabled = false;
+    public boolean farmlandTramplingOnlyPlayers = false;
+    public boolean farmlandTramplingFeatherFalling = false;
     private void farmlandSettings() {
         farmlandBypassMobGriefing = getBoolean("blocks.farmland.bypass-mob-griefing", farmlandBypassMobGriefing);
         farmlandGetsMoistFromBelow = getBoolean("blocks.farmland.gets-moist-from-below", farmlandGetsMoistFromBelow);
         farmlandAlpha = getBoolean("blocks.farmland.use-alpha-farmland", farmlandAlpha);
+        farmlandTramplingDisabled = getBoolean("blocks.farmland.disable-trampling", farmlandTramplingDisabled);
+        farmlandTramplingOnlyPlayers = getBoolean("blocks.farmland.only-players-trample", farmlandTramplingOnlyPlayers);
+        farmlandTramplingFeatherFalling = getBoolean("blocks.farmland.feather-fall-distance-affects-trampling", farmlandTramplingFeatherFalling);
     }
 
     public boolean furnaceInfiniteFuel = false;